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OG 10- DS 245

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by rabab » Sun Nov 02, 2008 8:37 pm
Is 1/a-b < b-a?

1) a<b
2) a<|a-b|

So the OA is A. But my question is, it's not mentioned in the question whether a or b is integer or fractions. If we consider both of them integers, the answer is pretty simple and it's A. But when we consider fractions- the answer comes to B.

Anybody pls explain, why is OG considering a and be to be integers?
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Source: — Data Sufficiency |
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Re: OG 10- DS 245

by stubbornp » Sun Nov 02, 2008 8:52 pm
rabab wrote:Is 1/a-b < b-a?

1) a<b
2) a<|a-b|

So the OA is A. But my question is, it's not mentioned in the question whether a or b is integer or fractions. If we consider both of them integers, the answer is pretty simple and it's A. But when we consider fractions- the answer comes to B.

Anybody pls explain, why is OG considering a and be to be integers?
I dont know how you conclude B as a answer...bcoz in B,we have to choose a absolute value of a and b...but in this question,we just need to know whether a is greater or less than b...Let me know if u ve any problems..
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by cramya » Sun Nov 02, 2008 10:13 pm
Rabab,
If no info is given for a and b then the condition must be trur for all (intgers, fractions,negative integers, negative fractions etcc).

Stmt II) would be INSUFF if you take a=-2 b = -3 and a=-2 b=-2 then it would be true for one and false for the other

Hope this helps!
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by cramya » Sun Nov 02, 2008 10:13 pm
Posted: Sun Nov 02, 2008 11:13 pm Post subject:

--------------------------------------------------------------------------------

Rabab,
If no info is given for a and b then the condition must be trur for all (intgers, fractions,negative integers, negative fractions etcc).

Stmt II) would be INSUFF if you take a=-2 b = -3 and a=-2 b=-3 then it would be true for one and false for the other

Hope this helps!
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by rabab » Sun Nov 02, 2008 10:41 pm
I have a question, are you guys considering a and b to be fractions?
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by cramya » Sun Nov 02, 2008 10:45 pm
Yes in stmt I we do and it is INSUFF

In stmt 2 we dont have to beacuse just by taking the values that I metnioned proves that it is INSUFF

Let me know if u hv questions still.
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by cramya » Sun Nov 02, 2008 10:45 pm
Hate typos!!

Yes in stmt I we do and it is SUFF

In stmt 2 we dont have to beacuse just by taking the values that I metnioned proves that it is INSUFF

Let me know if u hv questions still.
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